in den last days I had a bad performance on my IPv6 connection, but my IPv4 connection works just fine. I did take the time today to do some traceroutes and pings. My DSL provider is Deutsche Telekom in Germany and I am using the Tunnel server 216.66.80.30 in Frankfurt.Here is a traceroute:

Ping-Statistik für 216.66.80.30: Pakete: Gesendet = 513, Empfangen = 407, Verloren = 106 (20% Verlust),Ca. Zeitangaben in Millisek.: Minimum = 37ms, Maximum = 479ms, Mittelwert = 76msTranslated: 513 packets sent, 407 received, lost 106 - Times: min 37ms, max 479ms, avg. 76msI also did the same ping to the Server 216.66.86.143 in Berlin that also has the same 20% lost pings. The ping to the last hop with the IP 184.105.65.118 has no lost pings an quite stable ping times at ~40ms with only small variations so I thing that the problems are between 184.105.65.118 and 216.66.80.30.I did verify the ping from another DSL line that is connected to Vodafone Germany, but that shows the same ping loss so I rule out problems with my DSL provider Deutsche Telekom. Are there any known issues with the german tunnel servers?

Frankfurt tunnels were migrated to Berlin temporarily while it gets a hardware replacement. Berlin also started suffering some load and loss, but we've done a little tuning and it should be looking better.